Earplug



FIG. 1 is a front, right, perspective view of an earplug;

FIG. 2 is a rear, left, perspective view of the earplug;

FIG. 3 is a right-view of the earplug, the left-view being a mirror image thereof;

FIG. 4 is a top-view of the earplug, the bottom-view being a mirror image thereof;

FIG. 5 is a front-view of the earplug; and,

FIG. 6 is a rear-view of the earplug. 

CLAIM The ornamental design for an earplug, as shown and described. 